Representing the brogue (Boris's were from Churchill), the Mayor waxed lyrical about the country's menswear industry.

Boris Johnson poses with a coterie of male models on the corner of Savile Row this morning. Photo: PA

"Look at the whole G8, look at everybody in the UN; look at every single businessman.. and erm lots of businesswomen around the world," shouted Johnson from the street. "Everybody who wants to advance their career, what do they get when they wish to potter themselves up and join the terrible, bourgeois race for self-betterment? They get a suit, which was invented where? London!"

Johnson then went on to give a brief but factually accurate of Beau Brummell's creation of the three-piece suit. As his ever amusing and patriotic ramblings continued, he boldly declared: "London is to the suit, as Parma is to the Parmesan cheese".

Today marks the final day of the London Collections: Men spring/summer 2014 collections, with Burberry (credited as the inventor of the trench coat) making its debut on the schedule this afternoon.

And what was the post boy for London tailoring wearing himself? A Savile Row suit, naturally - but by a tailor whose name escaped him, and a purple tie from Marks & Spencer. His hair meanwhile, was in its usual perfunctory wash'n'go state; when a crowd member asked him if he wanted a quick blast of hairspray, he looked mock-flustered. His quipped response: "Are you serious?"